摘要
Dimethyl ether(DME)has potential application as a diesel substitute,a domestic fuel,a chemical building block,and an intermediate to ethylene or high-quality gasoline.In addition,it generates small-er amounts of environmentally harmful exhausts dur-ing combustion.Therefore,it attracts more and more attention and stimulates enthusiasm for the research and development of new production processes.The obstacle to its widespread industrialization is its high production cost,so the development of economical processes for producing DME is very important.It is commonly accepted so far that the most economicalway to produce DME is the one-step synthesis of DME from syngas in a three-phase process.The hinge to the realization of this process is the develop-ment of an active and stable catalyst.We have previ-ously reported on an improved catalyst,LP201(aCu/Zn/Al/Zr catalyst prepared by a modified precipi-tation method based on Ref[1]),for methanol syn-thesis in a three-phase process[2].In experiments,we have recently discovered that this catalyst is also suit-able for DME synthesis in a three-phase process if it is combined with a dehydration catalyst,y-alumina de-veloped by ourselves,and exhibits excellent catalytic performance.
目前二甲醚作为一种重要的能源受到广泛关注.实现生产二甲醚工艺的重点是采用一种廉价的生产流程及研制出性能优异的催化剂.本文采用普遍好评的三相反应器中合成气一步生产二甲醚的新工艺,并开发出具有优异催化性能的铜基催化剂LP201.对该催化剂的活性及热稳定性进行了评价,并利用多种手段对催化剂进行了表征。
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2004年第6期429-430,共2页
基金
Supported by 985 Research Foundation of Tsinghua University(200208003)
China Postdoctoral Science Foundation(2003).
